Service manual

33
DV-L70S
DV-L70BL
DV-L70W
9-11. IC701 AN8473NS-1
Pin No. Terminal name Operation function Pin No. Terminal name Operation function
1 VH Hole bias terminal 17 VM21 Motor power terminal 2
2 H3L Hole element 3 negative input terminal 18 VM22 Motor power terminal 2
3 H3H Hole element 3 positive input terminal 19 CS Current detection terminal
4 H2L Hole element 2 negative input terminal 20 NC N. C.
5 H2H Hole element 2 positive input terminal 21 A31 Drive output 3
6 H1L Hole element 1 negative input terminal 22 A32 Drive output 3
7 H1H Hole element 1 positive input terminal 23 PG2 Power current detection terminal 2
8 EC Torque command input terminal 24 A21 Drive output 2
9 ECR Torque command reference input terminal 25 A22 Drive output 2
10 FG FG signal output terminal 26 PG1 Power current detection terminal 1
11 START Start/stop selection terminal 27 A11 Drive output 1
12 VPUMP Booster terminal 28 A12 Drive output 1
13 BC1 Booster capacitor connection terminal 29 NC N. C.
14 BC2 Booster capacitor connection terminal 30 PWMSW PWM frequency selection terminal
15 GND GND terminal 31 VM12 Motor power terminal 1
16 VDD Power terminal 32 VM11 Motor power terminal 1
11
10
8
9
30
0.1µF
0.1µF
100µF
VPUMP
BC1BC2VDD
START
2200pF
Booster circuit
Thermal
protection
Output
circuit
OSC
Start/stop
FG
VH
H1H
H1H
H2H
H2L
H3H
H3L
100Ω
100Ω
EC
ECR
PWMSW
HIGH:40kHZ
LOW:80kHZ
SSET
VT
Vc1
FF
SRESET
PWMOUTL
PWMOUTU
5V
VM21
VM22
VM11
VM12
A11
A12
A21
A22
A31
A32
PG2
PG1
CS
X5
GND
Rcs=0.33Ω
AmplificationAmplification
Hole
amplifier
matrix
Hole
bias
Absolute
value
(After checking the tolerance
of the electrical characteristics,
the customer determines the
resistance value.)
Spindle speed
control signal
PWM frequency
connection circuit
14 13 1216
7
6
5
4
3
2
1
15
23
26
27
28
24
25
21
22
17
18
32
31
19
Distribution
circuit
• Block Diagram